With a built-in navigation system and a decent range of media playback options, the Kenwood DNX7100 cannot be faulted for its breadth of features, but the system is let down by its counterintuitive media-selection interface.

It was a stunning CES for automotive tech, with major advances in self-driving car technology being shown off by Audi, Mercedes-Benz, BMW and a number of automotive suppliers. In addition, Apple CarPlay and Android Auto will connect with your favorite phone in many cars.